I used this site when I was looking....
Toy Hauler Finds - every used toy hauler for sale!
FWIW - the used toyhaulers I did go look at were priced way too high.
I bought a new 2017 in August 2016 for a very few thousand more than
used ones were priced. Many of the used ones had screw holes in the garage - looked like maybe pegboard or shelving had been installed. They also were 'well used', had worn tires and older appliances.
The few better ones that were priced right were gone the same day they got posted. Guess that might be true for everything....
Good Luck.